San'layn by Businesscat

Instead of mana, you use blood, which fills up when you auto attack or activate your trait. Passively heal a small amount when dealing damage with auto attacks. Activate to siphon blood from the last hero you attacked, dealing damage and healing you as well as filling the blood meter by X amount.

Use a set amount of blood to launch a skillshot. It can pass through minions but loses effectiveness per minion passed through. If no minion is hit, you deal the full damage.

Short leap; deals damage and uses blood. If used on a minion, you’re refunded the cost, but the cooldown is slightly increased.

Transform into a cloud of blood, increasing your movement speed by 15%. Channeled ability that lasts as long as you channel it or until you run out of blood. You can pass through minions and heroes, but not terrain or structures

Curses a heroic target for 30 seconds. Your life leech is increased by 100% against that target and whenever you land a full power Blood Bolt, you deal extra damage and it stacks. If you miss, you lose all your stacks.

Passively gain a stack each time you hit a hero with Vampiric Bite. Once at 3 stacks, you can activate Bloodthirst to deal damage equal to their max health %

Bite an allied hero, tethering them to you, which splits the damage taken between both of you. Ally also benefits from Siphon Blood’s heal. Lasts as long as you’re near your target or until either of you die. Every enemy hero killed while tethered increases your damage by 10%. Each time your target gets a kill, increase their damage by 10%

Summons a goblin made of blood to chase down targeted enemy hero for 3 seconds, then explodes or expires. If the target is under the effect of Sanguine Curse, it gives you full stacks. The goblin’s run speed increases every second until it either detonates or disappears.

Fly into the air for a short period. While in the air, you’re able to cast Vampiric Bite at a massively increased range. The target you attack is dived on, stunning them for 1.5 seconds. Also gives you 2 stacks for Bloodthirst